期刊
SYSTEMATIC AND APPLIED MICROBIOLOGY
卷 27, 期 6, 页码 661-671出版社
ELSEVIER GMBH, URBAN & FISCHER VERLAG
DOI: 10.1078/0723202042369947
关键词
Trichosporon mycotoxinivorans; 26S rDNA; ITS sequences; IGS sequences; phylogenetic tree; microbial detoxification; mycotoxin deactivation; ochratoxin A; zearalenone
A yeast strain isolated from the hindgut of the lower termite Mastotermes darwiniensis (Mastotermitidae) was found to represent a new member of the genus Trichosporon. Trichosporon mycotoxinivorans is closely related to T. loubieri on the basis of the phylogenetic trees based on the D1/D2 region of 26S rDNA, an approx. 600 bp fragment of the 18S rDNA and both ITS regions. However, the two species differ at nine positions in the D1/D2 region of 26S rDNA. The IGS1 region of T mycotoxinivorans is 401 bp long. T mycotoxinivorans is distinguished from T loubieri by its ability to assimilate inulin and galactitol, and its inability to grow at 40 degreesC. The name of this newly isolated strain refers to an important characteristics of T mycotoxinivorans to detoxify mycotoxins such as ochratoxin A and zearalenone. Therefore this strain can be used for the deactivation of the respective mycotoxins in animal feeds.
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